Lesson 1 “A Land of Canyons”. The Colorado River did what? Wore away rock and helped carve out the Grand Canyon The Colorado River carried sand, gravel,

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Presentation transcript:

Lesson 1 “A Land of Canyons”

The Colorado River did what? Wore away rock and helped carve out the Grand Canyon The Colorado River carried sand, gravel, and boulders that helped cut out the canyon. Rainwater continues to dissolve certain kinds of rock causing it to wear away. River water is causing erosion. Also, sand is picked up by the wind and blown against the canyon’s walls, wearing away the surface of the rock.

Why is the formation of the Grand Canyon always changing? Erosion takes place all the time.

Early minors in the Grand Canyon decided to stop mining because they could make more money from tourism. How could they earn money from tourism? Charge admission to see the canyon Charge people to take people to the bottom of the canyon Sell souvenirs Lead sightseeing tours

Video of the Beautiful Grand Canyon

Why was the Grand Canyon made a national park? President Roosevelt wanted to preserve its beauty.

Why do people visit the Grand Canyon? 1.Go hiking around the canyon on their trails 2.Visitors walk along the canyons edge to see the breathtaking view 3.Park rangers can tell you about the animal wildlife 4.Explore Native American villages

Lesson 1 Review 1.What is the Grand Canyon and why do so many people travel to the Grand Canyon each year? 2.How might the Grand Canyon have been formed? 3.How does erosion affect the Grand Canyon today?